Garfinkel, S., & Spafford, G. (1991). Practical UNIX security. Sebastopol CA: O'Reilly & Associates.
Чикагска система за цитиранеGarfinkel, Simson., и Gene Spafford. Practical UNIX Security. Sebastopol CA: O'Reilly & Associates, 1991.
MLA формат за цитиранеGarfinkel, Simson., и Gene Spafford. Practical UNIX Security. Sebastopol CA: O'Reilly & Associates, 1991.
Внимание: Тези цитати може да не са 100% точни.